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18th May 2019, 20:52
Replies: 185
Views: 146,023
Posted By L39 Guy

So when do you think it crosses the line and...

So when do you think it crosses the line and becomes a Stab Trim Runaway and pilot intervention is required? After 5 secords, a minute or how about in terms of pitch change? 5 degrees, 10 degrees?...
18th May 2019, 20:45
Replies: 185
Views: 146,023
Posted By L39 Guy

This comment was directed to the individual that...

This comment was directed to the individual that thought that pulling the power off on an aircraft like the B737 (with under wing engines) was the worst thing one could do to counteract a nose down...
18th May 2019, 17:39
Replies: 185
Views: 146,023
Posted By L39 Guy

No, I am relying upon the preliminary report from...

No, I am relying upon the preliminary report from the accident flight and it does not have any detail of where the stab trim went to before they did the stab trim NNC. Perhaps they thought that...
18th May 2019, 17:30
Replies: 185
Views: 146,023
Posted By L39 Guy

The source of the activation is academic, the...

The source of the activation is academic, the result is what matters and the result is the aircraft not doing what the pilot, manually flying it, is commanding it to do.

As far as Boeing CYA, how...
18th May 2019, 17:17
Replies: 185
Views: 146,023
Posted By L39 Guy

They experienced the full meal deal MCAS so I...

They experienced the full meal deal MCAS so I would suggest that they were way out of trim too.

The big difference between them and the accident flights is that they executed the UAS drill after...
18th May 2019, 17:12
Replies: 185
Views: 146,023
Posted By L39 Guy

STS is an expected trim action that one learns...

STS is an expected trim action that one learns about and experiences with the procedures trainer, simulator and his or her first line trip. Moreover, STS works to bring the aircraft into trim, not...
18th May 2019, 15:52
Replies: 185
Views: 146,023
Posted By L39 Guy

Yes, it runs via the jackscrew but one does not...

Yes, it runs via the jackscrew but one does not let it get to the limit of the jackscrew before taking action on a stab trim runaway.
18th May 2019, 15:51
Replies: 185
Views: 146,023
Posted By L39 Guy

True about the differences in the functionality...

True about the differences in the functionality of the trim switches however the emergency procedure is identical, i.e. turn off both switches, is it not?

I can't speak for the simulator, its...
18th May 2019, 15:44
Replies: 185
Views: 146,023
Posted By L39 Guy

Really? Show me where in the Boeing manuals that...

Really? Show me where in the Boeing manuals that a Stab Trim Runaway is a case where the trim runs continuously to the limits of the jackscrew?

And how, as a pilot if you are a pilot, are you to...
18th May 2019, 15:25
Replies: 185
Views: 146,023
Posted By L39 Guy

You are correct in noting these accidents, two of...

You are correct in noting these accidents, two of which are fatal. That, in 9 years from a fleet of 82 aircraft today.

Bend alot likes to cherry pick data including an earlier post with a start...
18th May 2019, 14:43
Replies: 185
Views: 146,023
Posted By L39 Guy

Your analysis is largely correct except that...

Your analysis is largely correct except that Boeing assumed that pilots would be able to manage this situation as an MCAS failure exhibits identical characteristics to a pilot as a well known...
18th May 2019, 05:19
Replies: 185
Views: 146,023
Posted By L39 Guy

Better safety records does not necessarily mean...

Better safety records does not necessarily mean better pilots. As I demonstrated, the operating environment in Canada, one of the factors in safety records among others such as pilot training,...
18th May 2019, 05:14
Replies: 185
Views: 146,023
Posted By L39 Guy

I don’t think personal insults are warranted. ...

I don’t think personal insults are warranted.

I don’t know about you but I use flight controls like the elevator and stab trim to control pitch not engine thrust moments. Maybe I am doing...
18th May 2019, 05:10
Replies: 185
Views: 146,023
Posted By L39 Guy

Did I say that? Please reread my post. Carefully....

Did I say that? Please reread my post. Carefully.

It’s a fools game to say who are better or worse...the Operating environment in Canada is a difficult and unforgiving environment and the...
18th May 2019, 03:42
Replies: 185
Views: 146,023
Posted By L39 Guy

It’s true that underwing mounted engines creating...

It’s true that underwing mounted engines creating a pitching moment. I would submit that on balance the decrease in speed and hence control forces would be significantly more beneficial than the...
18th May 2019, 03:39
Replies: 185
Views: 146,023
Posted By L39 Guy

The safety record of “western” airlines is pretty...

The safety record of “western” airlines is pretty damn good and no one has to be ashamed or apologize for that. How many fatal jet crashes in Canada? 2011, a B737 at Resolute Bay. Prior to that, 1989...
18th May 2019, 03:29
Replies: 185
Views: 146,023
Posted By L39 Guy

Pull the power back and the speed decreases and...

Pull the power back and the speed decreases and so do the control forces, roughly 1/velocity^2. Half the speed, one quarter of the force required.
18th May 2019, 02:15
Replies: 185
Views: 146,023
Posted By L39 Guy

Human factors issues why they did not do a...

Human factors issues why they did not do a simple, memory checklist? If that is the case, the travelling public is doomed if professional pilots couldn’t even do a simple drill of turning off the...
8th May 2019, 09:13
Replies: 5,120
Views: 10,490,165
Posted By L39 Guy

So Gordon, what would make you happy? A massive...

So Gordon, what would make you happy? A massive mea culpa from Boeing saying something like "It's all our fault. We screwed up. We gamed the system. We were naughty."

As many pilots like myself...
8th May 2019, 09:06
Replies: 5,120
Views: 10,490,165
Posted By L39 Guy

Funny guy. First, there appears to be no jet...

Funny guy. First, there appears to be no jet aircraft in Botswana's airline industry (https://en.wikipedia.org/wiki/List_of_airlines_of_Botswana) so that was a bad choice to make jet comparisons.
...
8th May 2019, 08:11
Replies: 5,120
Views: 10,490,165
Posted By L39 Guy

Runway overrun in Florida and the B767 in...

Runway overrun in Florida and the B767 in Houston? Fair enough although let's see what caused the B767 accident first. But if you want to delve into overruns, check out avherald.com and see the...
8th May 2019, 08:04
Replies: 5,120
Views: 10,490,165
Posted By L39 Guy

I spent part of my instructing time in standards,...

I spent part of my instructing time in standards, i.e. upholding the standards. And part of the "standard" is human factors such as being able to cope with emergencies complete with bells and...
7th May 2019, 22:16
Replies: 5,120
Views: 10,490,165
Posted By L39 Guy

I think everyone is in agreement that MCAS needs...

I think everyone is in agreement that MCAS needs to be fixed.

None of the aviators that have defended Boeing or MCAS find this situation “acceptable” at all. What we have a hard time accepting is...
6th May 2019, 21:46
Replies: 5,120
Views: 10,490,165
Posted By L39 Guy

That simulator sequence at the beginning was...

That simulator sequence at the beginning was interesting to see. If that wasn't a stab trim runaway I don’t know what is. Uncommanded pitching of the nose (down in this case) and spinning of the trim...
6th May 2019, 21:08
Replies: 5,120
Views: 10,490,165
Posted By L39 Guy

Another factor is that given the dependence on...

Another factor is that given the dependence on automation these pilots may have never trimmed this aircraft or any others in their airline career.

Consider that if the airline policy was to use...
Showing results 1 to 25 of 55
 


 
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